what is the difference between var and let in javascript

what is the difference between var and let in javascript

In this article, We’ll see what is the difference between var and let in javascript ? Below an example will clarify the difference. The var statement declares a variable, optionally initializing it to a value. Demo: Statement – Var The let statement declares a block scope local variable, optionally initializing it to a value. Demo:Read more about what is the difference between var and let in javascript[…]

Javascript – What is the difference between undefined and null ?

Javascript – What is the difference between undefined and null ?

In this article, we’ll see what is the difference between undefined and null in javascript. undefined: means a variable has been declared but has not yet been assigned a value. Below an example: null: means an empty or non-existent value. It can be assigned to a variable as a representation of no value. Below anRead more about Javascript – What is the difference between undefined and null ?[…]